Final answer:
In the equation A/x = Y/B, A and Y are the means, and x and B are the extremes.
Step-by-step explanation:
In the equation A/x = Y/B, we have the means (A and Y) and the extremes (x and B). The means are the values on the left side of the equation (A and Y), while the extremes are the values on the right side of the equation (x and B). So, in this equation, A and Y are the means, and x and B are the extremes.